<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录页面</h1>
<form action="">
  <input type="text" name="username" placeholder="用户名">
  <input type="password" name="password" placeholder="密码">
  <input type="button" value="登录" @click="login()">
</form>
<!--引入axios和vue-->
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
  let v = new Vue({
    el:"form",
    data:{},
    methods:{
      login:function () {
        let data = new FormData(document.querySelector("form"));
        axois.post("/login",data).then(function (response) {
          if(response.data==1){
            alert("登录成功!");
            location.href = "/";
          }else if(response.data==2){
            alert("用户名不存在!")
          }else{
            alert("密码错误!");
          }
        })
      }
    }
  })
</script>
</body>
</html>